proses

<?php
include "../../config/koneksi.php";
$op=isset($_GET['op'])?$_GET['op']:null;
if($op=='barang'){
    echo "<thead>
                <tr>
                    <th>Kode Barang</th>
                    <th>Nama Barang</th>
                    <th>Harga Jual</th>
                    <th>Harga Terjual</th>
                    <th>Potongan</th>
                    <th>Qty</th>
                    <th>Subtotal</th>
                    <th>Aksi</th>
                </tr>
            </thead>";
    $query = mysql_query("select * from tblsementara order by idsementara DESC");
    $total=mysql_fetch_array(mysql_query("select sum(subtotal) as total from tblsementara"));
    while($r=mysql_fetch_array($query)){
        echo '<tr>
                    <td>$r[kd_brg]</td>
                    <td>$r[nm_brg]</td>
                    <td>$r[hrg_jual]</td>
                    <td>$r[hrg_terjual]</td>
                    <td>$r[potongan]</td>
                    <td>$r[qty]</td>
                    <td>$r[subtotal]</td>
                    <td>
                        <a class="btn btn-danger" href="proses.php?op=hapus&id=$r[idsementara]" id="hapus" data-toggle="tooltip" data-placement="top" title="Hapus"><span class="glyphicon glyphicon-trash"></span></a>
                    </td>
                </tr>';
    }
    echo"<tr>
                    <td colspan='6'>Total</td>
                    <td colspan='7'>$total[total]</td>
                </tr>";
?>